Bore sighting

pro2A

pro2A

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Anyone familiar with how to bore sight a rifle at home? I have a Savage .270 (bolt action obviously) and I had to take the scope off to get a spot of rust off the barrel and give it a good cleaning.

Now obviously it doesn't shoot for #### after taking the scope off and I really don't have the luxury of spending all day at the range shooting it and sighting it in.

I've heard, but don't know if there is any truth to it, that if you set the rifle up on a sturdy sandbag, take the bolt out, shine a laser thru the barrel to a target, and then match up the crosshairs to the dot, that you are basically set.

Does this work?
 
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Why do you need a laser? Block the rifle in a rest, remove the bolt. While looking down the barrel aim it at an object that you can center in the barrel - stop sign, street light ect. It should be at least 50 yards away. Turn your scope to a low setting and dial it in keeping the barrel on the target and moving the crosshairs to the target. It will take you a few times to get the scope adjusted just right. With practice you should be only a couple of minutes out.
I usually set up a target at 100 then bore sight my rifle at the range. With 3 or 4 rounds of live fire its good enough.

Remember to always confirm your bore sighting with a trip to the range.
Hope this helps
D
 
If you are going to be hunting with it bore sighting is not good enough.Take it to the range and put a couple of rounds through it just to make sure.
 
Should be still sighted in when you put it back, and yes the look down the bore, and run the reticle to the tgt ctr works every time. @ 100 meters first shot is within 5 or so inches of ctr. Too easy eh!
A little harder with a semi cause you can't see down the barrel, but still pretty easy , just start closer like 25 meters.
No idea why these gismos were offered.:D
 
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The more distant the object viewed through the bore, the more precise bore sighting is. This does not make up for properly zeroing of the rifle on paper, it is only useful to get you on paper.

I like the Bushnell Professional Bore Sighter. This is the one that has the arbors that tighten inside the barrel, then when you look through the sights or scope, there is a grid that you can adjust the sight against. Now to actually bore sight the rifle, this bore sighter works no better than does lining up the sights with an object that is viewed through the bore, but what it does particularly well, is that if can be used as an index to record the sighting of your rifle with various loads. You can record where the sight appears on the grid with any given load, and adjust back to it as needed. Also the zero of your rifle can be checked to ensure that there is no change of impact due to the sight getting bumped or to humidity working on the stock. Its a pretty handy piece of equipment really.
 
It's not that hard to just look down the bore, and dial the scope in close. Using a target at 50-100 m and try to get it roughly centered, then pop a few rounds at 25 m.

I think I swapped scopes on one of my rifles, and had it dialed in near perfect at 7 shots. I've done worse too!(note to self:make sure bases secure).

I have a little laser level that the dog goes ballistic chasing, I might try shining it through the bore and see if that works.:)
 
pro2A said:
Now obviously it doesn't shoot for s**t after taking the scope off and I really don't have the luxury of spending all day at the range shooting it and sighting it in.
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If you are going to hunt with this rifle is not really a luxury it is a must as you owe it to the game you intend to shoot .
First shot good clean kill shot !
 
Folks are not bore sighting their guns, and heading off hunting eh?
Sorry if I got that wrong, cause that would be bad, very bad..

and yes 25 yd zero will put it back at zero around 250 yds give or take , depending on caliber, load etc
 
pro2A said:
I really don't have the luxury of spending all day at the range shooting it and sighting it in.
Click to expand...

It should take you no more than 5-10 rounds, especially if you had it zeroed before, and not all day. 20 rounds if your a paranoid perfectionist or something. I remeber bore sighting my very first time, and I was only like 4 clicks vertically and eight horizontally off the mark (note that my clicks are 1cm@100m).

I'm sure you'll have no trouble.
 
It usually takes me five rounds to sight in after boresighting:

one shot at 25 yd, most important

then adjust scope to correct impact

then two shots at 100 yd

final adjustment of scope to desired impact, usually three inches high at 100

final two shots to confirm sight-in

Ted
 
Well put Ted:cool:
And for folks that want to make it easy , think of the turret/elev,windage dial
as screws (common household screw), example screw it down poi goes down.
Windage screw it in poi goes left. Same for out , poi goes up or right , to easy eh, no need for looking at those idiot marking r and l etc.

Now irons
Drift front towards poi.
Rear sight, just like a scope , drift towards where you want the bullet to hit(or away from poi).
Think I got that right:redface::D
 
there's a table that says "first crosses line of sight at" and then gives the yardage- this is your initial group yardage- if you look at the table again ,further along you see a set of crosshairs- this is the yardage at which the bullet last crosses the line of sight- it's really an arc or rainbow if you prefer, and these two points are the ends of the rainbow
 
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